#upload-box{
    display: inline-block;
    position:relative;
    width: 255px;
    height: 30px;
    cursor: pointer;
}
#btn{
    background: #3399fe;
    color: #FFF;
    border: none;
    border-radius: 5px;
    width: 60px;
}
#upload-text{
    padding: 0 5px;
    width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 30px;
}
.btn-box{
    display: flex;
}
.upload-file-input{
    opacity:0;
    position:absolute;
    width:100%;
    top:0;
    left:0;
}